scotland yard is under fire. a second top boss goes as the u.k.'s phone hacking scandals spread. >> those of us who take on the most difficult jobs clearly have to stand up and be counted when things go wrong. >> meanwhile, a former news of the world reporter and sources of a number of phone hacking allegations have been found dead. >> outgunned and not outwitted. we find out how the rebels in libya get creative in their fight against the forces of colonel qaddafi. and training for the london olympics. how one hurdler from trinidad is overcoming obstacles to make his country proud. >> welcome to our viewers on pbs and america and also around the globe. each day brings a new twist in the phone hacking scandal, which has engulfed britain. and today was certainly no exception. first came the news of the second high-profile resignation in scotland yard in 24 hours when assistant commissioner john yates announced he was stepping down. then a former world news reporter who said high-spread hacking of the paper under then editor andy clausen was found dea